Michael hastings



(No Model.)

M HASTINGS.

STOP VALVE. No. 271,067. PatentedJatr.23,1883.

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ML M 5.

WITNESSES: V INVENTUR- ATTORNEYS I UNITED STATES PATENT @FHCE.

MICHAEL HASTINGS, 0F BROOKLYN, new YORK.

STOP-VALVE.

SPECIFICATION forming part of Letters Patent No. 271,067, dated January 23, 1883.

Application filed May 31, 1882. (No model.)

To all whom it may concern Be it known that I, MICHAEL HASTINGS, a citizen of the United States, residing at Brooklvn, in the county of Kings and State of New Yorlt,.have invented new and useful Improvements in Stop-Valves, of which the following is a specification.

This invention relates to that class of valves for which Letters Patent ot' the United States were granted to me August 23, 1881, No. 246,132; and the invention has for its objects to facilitate the manufacture of the valves and to provide novel means whereby a tight joint is provided between the valve and valve-seat, and the latter retained free from grit, sediment, or other impurities. These objects I accomplish by the construction of parts illus' trated in the accompanying drawings, in which Figure 1 represents a vertical central section. Fig. 2 is a plan view of the valve-seat. Fig. 3 is an inverted plan view of the valve.

Similar letters indicate corresponding parts.

The letter A designates the valve-shell, cast with the usual diaphragm, B, having in it a port, 0, of circular shape. Surrounding the port 0 is the valve-seat D, which is beveled,

either in a straight or curvilinear plane, and at the upper edge of the seat is the guardflange E, the same forming a continuation of the seat. By this construction the formation of the seat and flange is materially facilitated, while the flange at the same time answers the purpose of keeping the seat free from grit or other impurities that may be contained in the fluid passing through the valve.

The letter F designates the valve, and G its outwardly-flaringelasticlip. Thislipisformed by the edge of a sheet-metal cap, which is fitted into a concavity formed in the lower surface of the valve, such cap being secured in position by a screw or suitable means. hen the valve is closed thelip Gr embraces and impinges against the valve-seat, and, owing to its elasticity, it tends to produce a tight joint, while as the lip is forced down onthe seat it acts as a scraper to keep the seat free of sediment.

I am aware that a valve has been provided with an inclined valve-seat and with-a cupshaped valve arranged to embrace and cover the valve-seat; also, that the port through the diaphragm of a valve has been surrounded by a narrow square rim to form a valve-seat; and, further, that the diaphragm of a valve has been provided with a valve-seat formed by a raised annular ledge interiorly beveled and exteriorly curved to co-operate with a valve composed of a recessed plug in which is secured a block of rubber or other packing adapted to be expanded by compression over the exterior curved part ot' the said annular ledge. Such features, therefore, I do not claim. My invention differs from such in that I provide the diaphragm with a beveled or inclined valve-seat, formed at its upper portion into a vertically -projecting guard -flange, which serves to retain the beveled or inclined seat free from grit and impurities; and, further, I provide the valve with an outwardly-flaring sheet-metal elastic lip, which embraces the valve-seat and its guard-flange, secures a tight joint, and serves to scrape the beveled valveseat, and thereby retain it free from sediment.

What I claim as new, and desire to secure by Letters Patent, is-

1. In a stop-valve, the diaphragm B, constructed with the inclined valve-seat D, formed at its upper edge into a vertical guard-flange, E, in combination with a valve provided with a flaring lip adapted to embrace the inclined valveeat and its guard-flange, substantially as described.

2. In a stop-valve, the combination of the diaphragm B, provided with the port 0, and

mating at its upper portion in a vertically-projecting flange, E, for deflecting grit, 850., away from the valve-seat, anda valve, F, provided with an attached outwardly-flaring sheet-metal lip, Gr, arranged to embrace the valve-seat, substantially as and for the purposes described.

integral with the inclined valve-seat D, and vertical guard-flange E, forming a continuation of the upper portion of the valve-seat, in combination with the valve F, provided with an attached outwardly-flaring sheet-metal elastic lip, G, arranged to embrace the valve-seat and its guard-flange, substantially as and for the purpose described.

4. In a stop-valve, the diaphragm B, provided with the inclined valve-seat D, formed at its upper portion into a vertically-projecting the surrounding inclined valve-seat D, termi 3. In a stop-valve, the diaphragm B,i'orn1ed guard-flange, E, in combination with the valve In testimony whereof I have hereunto set my F, having a, concavity or recess in its lower hand and sealin the presence of two subscrib- 10 side and the detachable sheet-metal cap seing Witnesses.

cured in the said concavity or recess of the 1 q valve and provided with the outwardly-flaring MKHAEL HASTING elastic lip G, arranged to embrace the valve- Witnesses:

seat and its guard-flange, substantially as and HENRY E. HUTCHINSON,

for the purposes described. JOHN RYER. 

